Course Content
Layout of Car & Working of a Car
1. Layout of Car 2. Working of Car
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Different Terms Used In Automobile
Here we will know about the terms and defination related to automobile industry.
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Skeleton of Car
Here is a list of some of the key components of a car's chassis or frame: Front and rear axles Suspension system (including shocks, struts, springs, and control arms) Steering system (including the steering rack, tie rods, and steering column) Braking system (including brake calipers, discs, and pads) Fuel tank Exhaust system Engine and transmission mounts Structural frame (including the front and rear subframes) Body panels (including the roof, doors, hood, and trunk)
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All About Automobile Engineering Course [Fundamental Course]
About Lesson

A wheel is a circular component that rotates around an axle, allowing the vehicle to move forward. It is typically made up of several parts, including:

  1. Rim: This is the outer edge of the wheel that holds the tire in place. It is typically made of steel or aluminum and can vary in design and size.

  2. Hub: This is the central part of the wheel that attaches to the axle. It contains the wheel bearings, which allow the wheel to rotate smoothly around the axle.

  3. Spokes: These are the rods that connect the rim to the hub. They provide support and structural strength to the wheel and can also affect its appearance.

  4. Nipples: These are the small threaded inserts that connect the spokes to the rim. They allow for adjustment of the spoke tension and help to keep the wheel true.

  5. Valve stem: This is the component that allows air to be added or removed from the tire. It is typically made of rubber or metal and can be either a Schrader or Presta type.

  6. Lug nuts or bolts: These are the fasteners that attach the wheel to the vehicle’s hub. They come in various sizes and designs depending on the vehicle and wheel type.

Proper maintenance of the wheel and its parts is important for safe and efficient operation of the vehicle. Regular inspection and replacement of worn or damaged components can help to prevent problems and ensure a smooth and safe ride.


Following are the main parts of car wheel:

  1. Wheel bearing
  2. Wheel rims
  3. Tire
  4. Wheel hub
  5. Wheel fasteners
  6. Barrel
  7. Bolt circle
  8. Outer lip
  9. Flanges
  10. Centre bore
  11. Valve system
  12. Spoke
  13. Center cap
  14. Beads
  15. Lug hole

Car Wheel and Its Parts
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